package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //1. 判断桶是否存在 (minioClient | bucketName)
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        //2.不存在创建桶,并且设置权限
        if (!bucketExists){
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //设置hello-minio桶的访问权限
            String policy = """
                        {
                          "Statement" : [ {
                            "Action" : "s3:GetObject",
                            "Effect" : "Allow",
                            "Principal" : "*",
                            "Resource" : "arn:aws:s3:::%s/*"
                          } ],
                          "Version" : "2012-10-17"
                        }""".formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build());
        }
        //3.优化下对象的名字 yyyyMMdd/uuid-原有的文件名
        String objectName =  new SimpleDateFormat("yyyyMMdd").format(new Date())
                + "/" + UUID.randomUUID().toString() + "-" + file.getOriginalFilename();
        //4.上传文件
        minioClient.putObject(PutObjectArgs.builder()
                .bucket(minioProperties.getBucketName())
                .object(objectName)
                .stream(file.getInputStream(),file.getSize(),-1)
                .contentType(file.getContentType())
                .build());

        //5.拼接一个访问地址 端点 + 桶名 + objectName
        //minioProperties.getEndpoint() + "/" + minioProperties.getBucketName() + "/" + objectName
        return String.join("/",minioProperties.getEndPoint(),minioProperties.getBucketName(),objectName) ;

    }
}
